SUGGESTON FOR: HIGH END MAIL SERVER

[nilesh vaghela]

Thanx for your reply.

Do you think HA is required ??

Does is make different to implement the dedicated server for each services
like pop3/imap , smtp , antivirus and antispam, httpd for web access for
this kind of load.

What could be the bandwidth , can suggest.

On 2/16/07, security <security at air-austral.com> wrote:
>
> nilesh vaghela a écrit :
> > Dear All,
> >
> > We are in planning for high end mailing services the criteria is:
> >
> > # starting with 2,00,000 user initially
> > # can be reach upto 5,00,000 users within 2-3 years.
> > # Need web access
> > # POP3 / IMAP/ and SMTP services
> > # Redundancy for server.
> > # Service monitoring and alarm for any critical failure.
> > # Antispam and Antivirus services.
> > # Backup obviously..
> >
> > What could be the server or servers config ( dedicated number of POP3/
> > IMAP
> > and SMTP server, Dedicated Antivirus and Antispam server / servers,
> > dedicated server for web access etc ).
> >
> > Which is the best MTA to handle mail services ?? ( Qmail, POSTFIX --
> > or any
> > other )
>
> Postfix is a good choice, but it seems that sendmail is faster (there is
> more security holes, but .. it run faster)
>
>
> > Which pop3 / IMAP server ( thinking for cyrusd )
> cyrusd, yes .. but the most important thing is to have a good server
> (write cache, optimisez fs like ext3 with noatime)
>
> You can use cyrus-murder to "clusterise" cyrus.
>
>
> > What is the best approach for antivirus and antispam.
>
> Antivirus: you can use clamav ..
> for the antispam, amavis use spamassassin by default (works well :)
>
> >
> > Which could be the best candidate for web access ( squirrelmail, horde
> > ?? )
>
> Horde is hard to configure,
> squirrelmail is hugly
>
> We test "round cube" webmail: all is in ajax, maybe a good solution ?
>
>
> >
> > Service monitoring NMS ( OPENNMS , negois ??)
>
> nagios do the work well :)
> >
> > Suggestions are welcome.
> >
> > Any body handling this kind of setup please give suggestion so can
> > plan for
> > the hardware and selection of the services.
> >
> >
> The most important thing:  Write cache and Ram !
>
>
>
>
>
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-- 
Nilesh Vaghela
ElectroMech
Redhat Channel Partner and Training Partner
74, Nalanda Complex, Satellite Rd, Ahmedabad
25, The Emperor, Fatehgunj, Baroda.
www.electromech.info